The BBC have released a brand new exclusive clip from this Saturday's episode of Doctor Who, The Unicorn and the Wasp. In the clip we see the Doctor and Donna meet the famous crime writer Agatha Christie played by Fenella Woolgar. Below is the clip;

The Unicorn and the Wasp will air this Saturday at 7pm on BBC One and is followed by Doctor Who Confidential over on BBC Three. In other news don't forget that Battles in Time #44 came out today, and Doctor Who Adventures #64 and Torchwood Magazine #5 come out tomorrow. Please comment. Thanks!